Sand separator and blender



March 22, 1932. G BRAUN 1,850,375

SAND SEPARATOR AND BLENDER Filed March 51, 1930 2 Sheets-Sheet l March22, 1932. e. BRAUN SAND SEPARATOR AND BLENDER Filed March 31, 1930 2Sheets-Sheet 2 /NV,5A/7OE.' 650265 BRA UN. 5/ jwa QT OE/WSK PatentedMar. 22, 1932 GEORGE BRAUN, F S'l. LOUIS, MISSOURI SAND SEPARATOR AN DBLENDER Application. filedMarch- 31, 1930. Serial No. 440,184.

The object of my invention is to make a sand'separator and blender. Afurther object isto makea device ofthe character described-to be usedprincipally for separating and blendingunolding sand as used infoundries. f-Wlien th'esand is removed from themolds," it is usuallydeposited onthe floor of'the' foundry." It is desirable to re-use thissand v Inlying on the floor it becomes c0- m mingled with foreignmatter, such as dirt, nails5 etc and dueto. the presence of moisture,lumps develop in the sand. These lumps must be cru'shed and broken up tothe condition of sand and. the foreign matter must be removed.

device finds particular'application in removing this foreign matter andin reconditioning the sand; My device" is usually mounted on a; dolly orwheels so that it may be-movedaroundin thefoundry-to difi'erentlocations; Thedev-ice is motor'dri'ven and is madeof few' and simpleparts that lend themselves readily to multiple production and ma-ybeacheaply made, easily assembled and repairedi' It is sulficientlylight" in weight'tope-rmit its facile'movement in the foundry. I 7

With these and other objects in view, my'invention has relation tocertainnovel features ofconstruction and arrangement of parts as will behereinafter more fully described, pointed out in the claims andillustrated in the drawings,- in which F i'gi lis a'side? elevation onone side of my device.

Fig.2is aside-elevation on the opposite side ofmy device. lnrneither ofthese figuresare the wheels for rolling the device above shown.

Fig. 3'i's. a plan'view'of my device.

. F igzis a;diagrammatic elevation showing 0 my device asused onwheels.I Fig; .5 isa front elevation of my device. Fig: 6is. a sectionalelevation of my device taken onthe line 6+6 of Fig. 5.-

. Tis a fragmental sectional elevation 5 ofthe'sifter'usedin my device,together with itspo'siti'oning'elements. Fig. 7 is taken onthelinef-77-' ofFig." 6'. Fig; 81i sa n enlarged fragmental sectionalportion of my device showing the-sitter: reciprocating wheel.

Numeral 9 designates the casing of my device, which is composed of theside walls 10 and 11, the front wall 12 and therear wall 13. The casing9 may be made ofwood or any suitable material. The rearwall 13is-ott-set to form the platform 14, on which is positioned the motor 15.f I have indicated an electric motor 15, which drives the mecha-- nismof my device. Numeral Iii-designates a truncated hopper secured to thetop ofthe casing 9 as shown in the drawings. Numeral 17 designates anaxle operatively secured to the bottom 18 of the casing 9. Numerals 20designate wheels operatively secured to the axle 17 externaltothe casing9. N umeral2l designates a foot secured to the bottom 18 of the casing9, for supportingthe rear end of the casing 9 on the floor as shown inFig. 4. In the front wall 12 is formed the opening 22, into which isfitted the spout 23, which is positionedasshown'by the drawings hav-,ing the inwardly extending inclined plane 24. Numeral "-designates'anaxle passing through the side walls 10 'andll and being journaled in thejournal boxes 26 and 27, which are secured in the side walls 10 and 11.Numeral 28designates a paddle wheel secured to the axle 25 between theside walls 10 and 11 and having the paddles 29. It will be seen that bya rotation of the axle 25 that the paddle wheel 28; will be rotated andthat the paddles 29 will be rotated within the casing 9; The paddles 29are of such length as not to come in contact with any of the walls ofthe casing in their rotation. "The paddles 29 are all'of'the samelength. Numerals 30 and 31 designatesprocket wheels keyed to one end ofthe axle 25' external to the side wall 10.

Numeral 32 designates an endless chain which is in mesh withone of thesprocket wheels 3l-and also in mesh with a sprocket wheel 33,'which iskeyed to'the armature'of the motor 15. By the structure thusfardescribed, it will be seen that when the armature of the motor 15 isrotated that the paddle wheel 28 will be rotated; Numeral 34 designatesan axle passing through the side walls 10 and 11 parallel and above theaxle 25- and journaled in the sidewalls 10 and-11' r b means of thejournal boxes and 36. To

2 7 same side of the casing 9 as of the axle 25, to which the sprocketwheels 7 hassec'ured to each truncated hopper 16 by whicht 'e oneexternal end of the axle 34 on the the'external 'end 30 and 31 arekeyed, is keyed the sprocket wheel 37. Numeral 38 designates an endless"chain in mesh with one of the sprocket wheels 31 and in mesh with thesprocket wheels 37.

On the opposite end of the axle 34 external to the casing 9 is keyed thesifter reciprocating wheel 39.- It will be seen'thatbythe structure thusfar described that when the armature of the motor 15 is rotated that-notonly the addle wheel 28 will be rotated, but that the sifterreciprocating wheel 39 will also be rotated. On the axle 34 in thecasing 9 is mounted the corrugated wheel 40. [The diameter of thecorrugated wheel 40 is such that it may be rotated with the axle 34with-- out coming in contact with the walls of the.

casing 9. The sifter reciprocating wheel 39 is rectangular in shapepreferably square and one of its sides the fingers 41. These fingers areslotted and are secured to the 'sifter reciprocating wheel 39-by meansof the screws 42, which pass through the slots in the fingers 41. Bythese means the projections of the fingers 41 over the edges of thereciprocating wheel may be adjusted. 'Numeral 43 designates the sifter[which is rotatively secured to a brace 44, between the front wall 12and the inset portion of the rear wall 13 above'the wheel 34 v and belowthe means of'the pin 45,

assesthrough the central brace 46 of the slfter 43. The sifter .43 issubstantially rectangular in shape with rounded corners,

' eating wheel side betweent e front having the frame 47 over which issecured the screen 48. The front wall 12 and the rear wall 13, that isinset, extend to the top of the sifter frame 47 The sifter frame is ofsuch size that itma' be reciprocated from side to wall 12 and the insetortion of :the rear'wall 13. To the one end of the sifter frame-43centrally positioned is located the arm 49, which armis on thesamesideof the casing .9, as is the sifter recipro- 39. The arm 49 extendsinto 41.0f thesifter reciprocating I I I the sifter reci rocating wheel39 are of such length that a ter they havemoved the arm 49 to itslimiting. lateral position, theyiwill and disengage themselves from thearm 49. The resilience of the'fingers 4l;en,ables thlsto be done easily;Inorl der to'returnthe arm 49to theposition at the opposite nd of itsreciprocation, the spring 50. is provided, which is secured at one endto the casing 9 between the sifter reciprocating wheel 39 and the wallof the casing 9 and the other endis in contact with the arm 49. gThesitionon one end of itsreciprocation.

sifterreclprocat ng wheel 39 as previously 7 springoll holds the arm49in its normal o- .and that hence the paddle the sand from on thetruncated hopper 16,

indicated 43 to the opposite end of its reciprocation.

The operation of my device is as follows: Assuming that the motor 15 isoperating and that the sifter rec procating wheel 39 is rotating andthat the sifter 43 is reciprocating within the limits previouslydescribed, the foundry floor is shoveled falls into the sifter 43 whereowing to the reciprocationof the sifter 43, the sand is permitted tofall through to the corrugated wheel 40. The foreign matter does notpass through the sifter43 and may be remove therefrom readily manually.further 'shaked gated wheel 40 and between it and the side walls of thecasing 9 and then falls on to the paddles,29 iandthe paddle wheel 28where it is] rotated and finally ejected through the spout 2311p theincline plane The casing 9 is positioned "at the most, convenient angle.for a proper ejectionofthe finished sand, by means of having properheight.

PWhat I cla m and mean to by described ters Patent is: I i

1. Infadevice of -theficharacter a casing, a horizontal Sifter," saidsifter pos'itioned in said casing so asr to permitits reciprocation, acorrugated wheel rotatively positioned beneath the screen insaid casinginthe path of the material its periphery adjacent the casing walls, andmeans of reciprocating said sifter andirotating} said corrugated wheel,a paddle wheel-rotatively-secured in said casing sa d paddle-wheel beinglocated beneath the corrugated wheel and in the path of the material,and means of rotating said addle wheel, a'motor, said motoroperative ycon-, nected to said paddle wheel and said cor ruga'ted wheel and themeans for recipm eating saidsiften 2. In a device of a casing, ahorizontal sifter," said sifter p0- sitioned in said casing so as topermit its f reciprocation, a corrugated wheelrotatively I beneath thescreen in said casposition'ed I ing in thevpath of the material to besifted moves the arm '49 and the sifter" wheel 28 isrrotat- V g ing andthe corrugated wheel 40 is rotated from which it I The .sandis andcrushed on the corru the foot 21 of the;

to be sifted with thezcharacter described r with itsperipheryadj acentthe casing walls,

and means of reciprocating said'sifterand corrugated wheel, a paddle Irotating said wheel flitatively secured in said casing said paddle wheelbeing; located beneath the corrugated wheel and in the path ofthematerial," and means of rotating said paddle wheel, a motor, saidmotor operativelycon rugated ing said sifter,

sifter reciprocating wheel having nected to said'pa'ddle'wheel andsaid-,cor-

wheel and the means for reciprocatsaid means consistingnof a are GEORGEBRAUN.

